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M12 x 1.5P, Fine Pitch, Hex Bolt, High Tensile/ 8.8, Self Colour. DIN 931. METRIC FINE, Hex-Bolt freeshipping - Fixaball Ltd. Fixings and Fasteners UK
Metric Coarse Threads - Boltport Fasteners
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Designer's Guide: Threads-Thread Relief and Chamfers | Precision Machined Products Association
